Those old writings are being recovered thanks to scientists at Stanford Linear Accelerator Center. With excruciating slowness and care, they have begun using a beam of X-ray radiation no thicker than a human hair to scan a goatskin parchment known as the Archimedes Palimpsest. It's of unusual interest because it shows how advanced mathematics -- the so-called Queen of the Sciences -- was in ancient times, at least in the mind of a legendary mathematician.